ASTM D7383-19
(Test Method)Standard Test Methods for Axial Rapid Load (Compressive Force Pulse) Testing of Deep Foundations
Standard Test Methods for Axial Rapid Load (Compressive Force Pulse) Testing of Deep Foundations
SIGNIFICANCE AND USE
4.1 Based on the measurements of force and displacement at the pile top, possibly combined with those from accelerometers or strain transducers located further down the pile, these test methods measure the pile top deflection in response to an axial compressive force pulse. The relatively long duration of the force pulse compared to the natural period of the test pile causes the pile to compress and translate approximately as a unit during a portion of the pulse, simultaneously mobilizing compressive axial static resistance and dynamic resistance at all points along the length of the pile for that portion of the test.
4.2 The compressive axial static resistance is derived from the test data and is therefore an indirect result. Test Method D1143/D1143M provides a direct and therefore more reliable measurement of static resistance.
4.3 The Engineer should ensure that the test as specified will generate the required peak force to meet the purpose of the test. In case that purpose is to establish geotechnical failure, the Engineer should also ensure that peak force results in significant permanent axial movement during the axial force pulse event.
4.4 The Engineer may analyze the acquired data using engineering principles and judgment to evaluate the performance of the force pulse apparatus, and the characteristics of the pile's response to the force pulse loading. This analysis typically includes a reduction factor to account for the loading rate effect, that is, additional load resistance that occurs as a result of a faster rate of loading than used during a static test. Test results from piles installed in cohesive soils generally require a greater reduction. The Engineer should determine how the type, size, and shape of the pile, and the properties of the soil or rock beneath and adjacent to the pile, affect the rate-of-loading reduction factors and the amount of movement required to mobilize and accurately assess the static resistance by eliminating the dy...
SCOPE
1.1 These test methods, commonly referred to as Rapid Load Testing, cover procedures for testing an individual vertical or inclined deep foundation element to determine the displacement response to an axial compressive force pulse applied at its top. These non-static foundation test methods apply to all deep foundation units, referred to herein as “piles,” that function in a manner similar to driven or cast-in-place piles, regardless of their method of installation.
1.2 Two alternative procedures are provided:
1.2.1 Procedure A uses a combustion gas pressure apparatus to produce the required axial compressive force pulse.
1.2.2 Procedure B uses a cushioned drop mass apparatus to produce the required axial compressive force pulse.
1.3 This standard provides minimum requirements for testing deep foundations under an axial compressive force pulse. Plans, specifications, provisions (or combinations thereof) prepared by a qualified engineer, may provide additional requirements and procedures as needed to satisfy the objectives of a particular deep foundation test program. The engineer in responsible charge of the foundation design, referred to herein as the “Engineer,” shall approve any deviations, deletions, or additions to the requirements of this standard.
1.4 The proper conduct and evaluation of the test requires special knowledge and experience. A qualified engineer should directly supervise the acquisition of field data and the interpretation of the test results so as to predict the actual performance and adequacy of deep foundations used in the constructed foundation. A qualified engineer shall approve the apparatus used for applying the force pulse, rigging and hoisting equipment, support frames, templates, and test procedures.
1.5 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be...
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D7383 − 19
Standard Test Methods for
Axial Rapid Load (Compressive Force Pulse) Testing of
1
Deep Foundations
This standard is issued under the fixed designation D7383; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope as requirements of the standard. The word “shall” indicates a
mandatory provision, and the word “should” indicates a
1.1 These test methods, commonly referred to as Rapid
recommended or advisory provision. Imperative sentences
Load Testing, cover procedures for testing an individual
indicate mandatory provisions.
vertical or inclined deep foundation element to determine the
displacement response to an axial compressive force pulse
1.6 The values stated in SI units are to be regarded as
applied at its top. These non-static foundation test methods
standard. No other units of measurement are included in this
apply to all deep foundation units, referred to herein as “piles,”
standard.
that function in a manner similar to driven or cast-in-place
1.7 All observed and calculated values shall conform to the
piles, regardless of their method of installation.
guidelines for significant digits and rounding established in
1.2 Two alternative procedures are provided:
Practice D6026.
1.2.1 ProcedureAuses a combustion gas pressure apparatus
1.7.1 Theproceduresusedtospecifyhowdataarecollected/
to produce the required axial compressive force pulse.
recorded or calculated in the standard are regarded as the
1.2.2 Procedure B uses a cushioned drop mass apparatus to
industry standard. In addition, they are representative of the
produce the required axial compressive force pulse.
significant digits that generally should be retained. The proce-
1.3 This standard provides minimum requirements for test-
dures used do not consider material variation, purpose for
ing deep foundations under an axial compressive force pulse.
obtaining the data, special purpose studies, or any consider-
Plans, specifications, provisions (or combinations thereof)
ations for the user’s objectives; and it is common practice to
prepared by a qualified engineer, may provide additional
increase or reduce significant digits of reported data to be
requirementsandproceduresasneededtosatisfytheobjectives
commensuratewiththeseconsiderations.Itisbeyondthescope
of a particular deep foundation test program. The engineer in
of this standard to consider significant digits used in analysis
responsible charge of the foundation design, referred to herein
methods for engineering data
as the “Engineer,” shall approve any deviations, deletions, or
additions to the requirements of this standard.
1.8 The method used to specify how data are collected,
1.4 The proper conduct and evaluation of the test requires
calculated or recorded in this standard is not directly related to
special knowledge and experience.Aqualified engineer should
the accuracy to which the data can be applied in the design or
directly supervise the acquisition of field data and the interpre-
other uses, or both. How one uses the results obtained using
tation of the test results so as to predict the actual performance
this standard is beyond its scope.
and adequacy of deep foundations used in the constructed
1.9 ASTM International takes no position respecting the
foundation. A qualified engineer shall approve the apparatus
validity of any patent rights asserted in connection with any
used for applying the force pulse, rigging and hoisting
item mentioned in this standard. Users of this standard are
equipment, support frames, templates, and test procedures.
expresslyadvisedthatdeterminationofthevalidityofanysuch
1.5 The text of this standard references notes and footnotes
patent rights, and the risk of infringement of such rights, are
which provide explanatory material. These notes and footnotes
entirely their own responsibility.
(excluding those in tables and figures) shall not be considered
1.10 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1 responsibility of the user of this standard to establish appro-
These test methods are under the jurisdiction ofASTM Committee D18 on Soil
and Rock and is the direct responsibility of Subcommittee D18.11 on Deep
priate safety, health, and environmental practices and deter-
Foundations.
mine the applicability of regulatory limitations prior to use.
Current edition approved March 1, 2019. Published March 2019. Original
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D7383 − 10 D7383 − 19
Standard Test Methods for
Axial Compressive Force Pulse (Rapid) Rapid Load
1
(Compressive Force Pulse) Testing of Deep Foundations
This standard is issued under the fixed designation D7383; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 These test methods methods, commonly referred to as Rapid Load Testing, cover procedures for testing an individual
vertical or inclined deep foundation element to determine the displacement response to an axial compressive force pulse applied
at its top. These non-static foundation test methods apply to all deep foundation units, referred to herein as “piles,” that function
in a manner similar to driven or cast-in-place piles, regardless of their method of installation.
1.2 Two alternative procedures are provided:
1.2.1 Procedure A uses a combustion gas pressure apparatus to produce the required axial compressive force pulse.
1.2.2 Procedure B uses a cushioned drop mass apparatus to produce the required axial compressive force pulse.
1.3 This standard provides minimum requirements for testing deep foundations under an axial compressive force pulse. Plans,
specifications, provisions (or combinations thereof) prepared by a qualified engineer, may provide additional requirements and
procedures as needed to satisfy the objectives of a particular deep foundation test program. The engineer in responsible charge of
the foundation design, referred to herein as the “Engineer,” shall approve any deviations, deletions, or additions to the requirements
of this standard.
1.4 The proper conduct and evaluation of force pulse testing the test requires special knowledge and experience. A qualified
engineer should directly supervise the acquisition of field data and the interpretation of the test results so as to predict the actual
performance and adequacy of deep foundations used in the constructed foundation. A qualified engineer shall approve the apparatus
used for applying the force pulse, rigging and hoisting equipment, support frames, templates, and test procedures.
1.5 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered as requirements of the standard. The word “shall” indicates a
mandatory provision, and the word “should” indicates a recommended or advisory provision. Imperative sentences indicate
mandatory provisions.
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.7 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice
D6026.
1.7.1 The procedures used to specify how data are collected/recorded or calculated in the standard are regarded as the industry
standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not
consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives;
and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations.
It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering data
1.8 The method used to specify how data are collected, calculated or recorded in this standard is not directly related to the
accuracy to which the data can be applied in the design or other uses, or both. How one uses the results obtained using this standard
is beyond its scope.
1.9 ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item
mentioned in this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights,
and the risk of infringement of such rights, are entirely their own responsibility.
1.10 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all
of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate
1
These test methods are under the jurisdiction of ASTM Co
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